tests: Fix comparison of attributes' namespaces in XML tree comparisons
tests: Fix comparison of attributes' namespaces in XML tree comparisons

Distrotech/libgdata,Pecisk/libgdata,Distrotech/libgdata,Pecisk/libgdata-gtasks,GNOME/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata,pwithnall/libgdata,Distrotech/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata,pwithnall/libgdata